Vol 80, No 3 (2022)
Original article
Published online: 2022-02-13
Right atrial phasic function and outcome in patients with heart failure and reduced ejection fraction: Insights from speckle-tracking and three-dimensional echocardiography
Abstract
Background: Atrial phasic function can be assessed using speckle-tracking and three-dimensional (3D) echocardiography. The extent and role of right atrial (RA) dysfunction in left-sided heart failure (HF) is incompletely understood. We aimed to characterize RA phasic function in HF with reduced ejection fraction (HFrEF) and to assess its prognostic significance.
Methods: We prospectively enrolled 60 patients with HFrEF and 29 normal controls. RA phasic function was assessed using strain curves derived from speckle-tracking echocardiography and 3D volumetric analysis. Patients were followed for a composite endpoint of cardiac death or rehospitalization for HF.
Results: After a mean follow-up of 19 (9) months, 33 patients reached the primary endpoint. Patients with HFrEF and adverse outcomes showed an impairment of both reservoir, conduit, and booster pump RA function when compared to controls. After adjustment for age, left ventricular systolic and diastolic function, right ventricular systolic function and pulmonary artery pressure, RA maximal and minimal volumes, as well as passive emptying fraction, remained independent predictors of death or rehospitalization (hazard ratio [HR], 3.207; 95% confidence interval [CI], 1.288–7.984; P = 0.012; HR, 2.362, 95% CI, 1.004–5.552; P = 0.049; and HR, 2.367; 95% CI, 1.066–5.259; P = 0.034, respectively).
Conclusion: All three components of RA phasic function are impaired in left-sided HF. 3D RA maximal and minimal volumes, as well as 3D RA passive emptying fraction, are independent predictors of adverse outcomes in HFrEF.
Keywords: right atriumheart failure with reduced ejection fractionatrial phasic functionatrial strain3D atrial volumes
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